Improvement in fan-blowers



NI-TED STATES ATENT EEICE.

WILLIAM WINTER, OF-PLAINFIELD, NEW JERSEY.

IMPROVEMENT IN FAN-BLOWERS.

To all whom t may concern Be it knownthat 1, WILLIAM WINTER, of Plainfield, in the county of Union and State of NewJ ersey,haveinventcd anew and Improved Fan-Blower; and I do hereby declare that the following is a full, clear, and exact description ot the same, reference being had to the accompanying drawings, forminga part of this speciication, in which- Figure l represents a horizontal section of my invention. Fig. 2 is a perspective sectional viewof the same.

Similar letters ot reference in both views indicate corresponding parts.

The principal object of this invention is to produce a fan-blower which will have the same eiieet when worked in either direction, in contradistinction to ordinary fan-blowers, which work in scroll shaped cases, and consequently act in a diti'erent manner when turned in one than when turned in the opposite direc tion.

The invention consists in an annular airchamber surrounding a double conical cavity with central openings and communicating with thel same at its apex, in combination with triangular wings workingin said double conical cavity, in such a manner that on imparting to the `wings a rapid rotary motion the air passing through the central openings into the double conical cavity is forced in the annular air-chamber, whence it is conducted by a suitable tube or tubes to the place or places where the blast is to take effect.

To enable those skilled in the art to make and use my invention, I will proceed to describe it.

A represents a case, made in two parts, of wood or any other suitable material. This case is provided with a double conical cavity, a, formed by rotating an imaginary triangle round the central axis, b. The apex of the cavity a communicates through a circular opening, c, with an annular air-chamber, d, which surrounds the cavity a, and from which one' or more pipes, 6, lead to the place or places where the draft is to take effect. The cavity a communicates, by means of central apertures, f, with the open atmosphere, and its interior is occupied by four (more or less) triangular wings, B, which tit nicely'into said cavity, and which are secured to the axis b, as clearly shown in Fig. 2 ot' the drawings. The

. axis b has its bearings in bars g, secured to the heads of the case A, across the central apertures, j', or in suitable boxes secured to said bars, and it is furnished with a pulley, h., whereby a rotary motion can be imparted to said axis, together with the wings. The case A may be fastened down to beams C, in a position such as shown in the drawings, bringing the axis bin a vertical position; or it may be provided with suitable legs and put up so that the axis assumes a horizontal position.

In imparting to the axis b, with the wings B, a rapid rotary motion in either direction, the air is drawn in through the central apertures, f, and forced into the annular air-chamber d, and from that airchamber it is conducted through tlie pipe e to the iire, furnace, or other place where the blast is to take et't'cct.

It will be easily understood that the direction in which the axis, with the wings, rotates does not alter the et't'ect ofthe blower; its action depends entirely upon the triangular shape ot' the wings and upon the annular airchamber in which the air drawn in through the central apertures is stored, and from which Said air is distributed, as above explained.

What I claim as new, and desire to secure by Letters Patent, is

rIhe annular air-chamber d and double conical cavity a, with central apertures, f, in com- 

